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3 power supply troubleshooting – Toshiba PORTEGE M400 User Manual

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2 Troubleshooting

2.3 Power Supply Troubleshooting

2-6

[CONFIDENTIAL]

PORTEGE M400 Maintenance Manual (960-541)

2.3 Power

Supply

Troubleshooting

The power supply controller controls many functions and components. To determine if the
power supply is functioning properly, start with Procedure 1 and continue with the other
Procedures as instructed. The procedures described in this section are:

Procedure 1: Power Supply Icon Check

Procedure 2: Error Code Check

Procedure 3: Connection Check

Procedure 4: Quick Charge Check

Procedure 5: Replacement Check